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We're having trouble uploading a large file (17 MB) to a remote server using the UploadFile method. They are requesting that we turn off the "resume feature" in our SFTP client. We could not find a "resume feature" in ChilKat. Does the UploadFile method automatically send the file in peices for larger files and do a resume intrinsically?

We currently are running version 9.3

The error we are seeing is: "System.AccessViolationException: Attempted to read or write protected memory."

Thank you, Andy

asked Feb 04 '13 at 13:55

AOHST's gravatar image


One other thing to note is that we do not have "update" privleges on on the server we are uploading to.

(Feb 04 '13 at 14:50) AOHST

I would recommend first downloading and testing with the latest version of Chilkat (v9.4.0)

If the access violation continues, please let me know.

Maybe your counter-party is confusing the FTP protocol with SSH/SFTP? For clarification:

"SFTP" is the Secure File Transfer Protocol over SSH. It is a protocol unrelated to the FTP protocol. The Chilkat SSH / SFTP component is used for "SFTP". SFTP is achieved by connecting to an SSH server at port 22.

On the other hand, the Chilkat FTP2 component is for FTP. FTP servers listen at port 21 (non-SSL/TLS) and port 990 (SSL). FTP over SSL (i.e. port 990) is called "FTPS".


answered Feb 04 '13 at 19:35

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Asked: Feb 04 '13 at 13:55

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Last updated: Jan 31 '14 at 03:35

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